Supporting-block for brush-backs.



W. G. 1G.

SUPPORTING BLOC BRUSH BACKS.

PPPPPP ATION FILED FEB. 9, 1912.

1,119,023, Patented Dec. 1, i914.

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WITNESSES: l/VVE/VTOR WILLIA'M e. LIEBIGQOF DETROIT, MICHIGAN.

To all whom it may 6mm Be it known that I, WILLIAM LIiiBiG,

who am a citizen ofthe United States of ments in Supporting-Blocks for Brush- Backs, of which the following is a specification.

porting brush backs inv position, both while the tuft holes are being bored therein, and when the insertion of the tufts is subsequently begun, and has for its object an improved device ofthis type adapted especially for brush backs of partly straight and partly circular cross-sectional outline,

wherein the location of the tuft holes and consequently of the bristles, is in the straight or plane side, and which .would otherwise be difficult to support against rocking when resting on the curved side.

In the drawings :-Figure 1 is a perspec-v tiveof the device, with a brush back in position thereon. Fig. 2 is a cross section on the line w-w of Fig. 1. Fig. 3 is a cross section .011 the line yy of Fig. 1. 1 1' Arepresents the base of theblock, at each end of which is located arest B, whose top is of about the curvature of the brush back that is to be handled, or of a slightly greater curvature. This block may be in one piece or two parts between which the metal block D is inserted. In these rests, and extending ends are adapted to engage in the previously bored handle holes E in the center ofthe brush back C. The lower ends of the claws, below their points of pivoting, are adapted to be engaged by the upper end of the screw J, which is preferably operated from the under face of the block, so as to" force the outer points of theclaws toward one another, and consequently into the holes,

I Y I Specification of Letters Patent.

This invention relates to devices for sup in the operations, are to be set the sfier'onmnjeigegg jgo .BRusH-BAoKs;

Patented Dec. 1, 1914.

Application f led February 9, 1912Q Serial Nb. 676,658.

in the brush back C, thus holding it firmly against the curved top portions of the rests B, and against rocking, even when the force of the, borlng member or the tuft-setting memberis dlrected against holes in the row nearest either edge of the plane face of the blank. .Since the center of the curved face of the blank illustrated is at the point K, it is evident that, except for the support against rocking given theblank by this device, any pressure onits upper plane face except on the row of holes exactly, in its center would cause the blank to rock, most objectionably; and this would be'true even were the cross section of the blank less than a segment whose chord is located on the same side of the center as the curved periphery. p

Itis of course within the scope of my inventlon to use two actuating screws, one for each pivoted claw member, and located either in the bottom of the base or in its side, but the type illustrated is far preferable. g

1. A supporting block for brush backs, comprising a body portion'having a relatively low center portion and raised ends having their upper surfaces longitudinally rounded, a pair of pivoted claw members located in said low centerportion in position to engage previously bored holes in the corresponding portion of a blank, and a screw member whereby said claws may be caused to open and close with respect to said bored blank, substantially.asdescribed.

2. Incombination with a supporting block having its end portions shaped to receive a blank laid therein, a pair of claw members pivotally supported in the central portion of said block in position to engage the corresponding portion of the blank, and means for causing the opening and closing movement of said claws with respect to one another and to the blank, substantially as described.

3. In a supporting block for brush backs, in combination with a supporting member having its ends fashioned to engage partially about a blank laid thereon a pair of claw members attached to the intermediate In testimony hereof'iaiiix my signature portion of the supporting member and a in presence of two-Witnesses.

controlling screw adapteduto engage said t WILLIAM G.LIEBIG.

clawj membere whereby their-l gsiticn with Witnesses 5 respect to the blank may be regu1ated,' sfub H H WILLIAM M. TSWAN;

stantially as described. JErF R scr; G. THURBER.

s n,almrs;m= m commissipner of Patents;

' Copies of this patent may be obtained for fivegent Y t wa'liingtbm'fl; c1. 

